Machine for refining paper and pulp



April' 19, 1932. H. WESSEL ET AL MACHINE FOR REFINING PAPER AND PULPFiled May 17, 1927 2 Sheets-Sheet l duo My Wesse/ Oscar E Larson IN VENTORS BY M ATTORNEY.

2 Sheets..s 2

A TTORNE p il 19, 1932 L. H. WESSEL ET AL MACHINE FOR REFINING PAPER ANDPULP Filed May 1927 Patented Apr. 19, 1932 UNHE FFECE PATENT LUDWIG H.WESSEL AND OSCAR E. LARSON, OF LANCASTER, OHIO, ASSIGNORS TO THE HERMANNMANUFACTURING COMPANY, OF LANCASTER, OHIO, A CORPORATION OF OHIO MACHINEFOR REFINING PAPER AND PULP Application filed May 17,

Our invention relates to a machine for refining paper and pulp andrelates, more particularly, to a means for properly positioning andrigidly securing various parts of the refining plug in operativerelation.

Plugs of this character are commonly known as Jordan plugs and areprovided with beating and brushing knives carried by a sleeve. Suchsleeves are, generally, wedgeshaped conforming to the shape of the plugon which they are disposed to form an efiective driving connection andthese sleeves are, necessarily, removed from time to time in order thatrepairs or replacements may be made. It is, therefore, a requirementthat some means be provided whereby the sleeve may be properlypositioned and rigidly secured to the plug body and, at the same time,will facilitate the removal of the sleeve from the plug body. Previousmeans provided for properly positioning and securing the sleeve to theplug have been unsatisfactory from the standpoint that the positioningand securing means have contacted with a large amount of water which, intime, destroys their efficiency. Also, the length of time required toremove and replace this sleeve on theplu'g body and consequent delay inproduction has been an undesirable feature.

One object of our invention is to provide a device wherein the variouspartsof the refining plug may be positioned and secured in operativerelation, forming an effective driving connection and, at the same time,providing a device wherein the sleeve may be quickly and easily removedfrom the plug bod A iiother object of our inventiori'is to provide adevice wherein the positioning and securing means may be protected fromcontact with water or other fluids which tend to destroy its efficiency.

' Other and further objects of our invention will be apparent as thisdescription progresses and the preferred embodiment of our inventionwill be seen in the accompanying drawings wherein similar characters ofreference designate corresponding parts and wherein:

Figure 1 is a sectional view of the large 1927; Serial No. 192,115.

end of a refining plug showing the means for properly positioning andsecuring the various parts of the plug in operative relation.

Figure 2 is an end view of the device shown in Figure 1.

Figure 3 is a view similar to Figure 1 but showing a modification in themeans for properly positioning and securing the va-' rious parts of therefining plug in operative relation.

Figure 4 is an end view of the modification shown in Figure 3.

Figure 5 is a side elevation of a refining plug and its covering sleevepositioned and secured in assembled relation in accordance with thepreferred embodiment of our invention.

Figure 6 is a sectional view of the device shown in Figure 5 and takenon the line 66 of Figure '5,

With reference to the drawings, we have shown a refining plugconstructed in accordance with our invention wherein the numeral 1designates a tapered hollow plug of circular crosssection. This plug ismounted upon a shaft 2 by'means of the bearings 3 and 4 or in any othermanner suiting the preference of the user. The plug 1 tapers toward oneend so that it is substantially conical in form and may be wedgedtightly into a covering sleeve 5. Such sleeve 5 is provided on itsexterior surface with ribs 6 or the like to form a suitable refiningmeans. Any suitable type of refining means may be used and we do notwant to be limited to any particular type of refining plug or any method"of mounting this plug on its shaft.

The large end of the plug body 1 is equipped "with the circumferentiallyspaced slots 7 which are adapted to receive the ends of the oppositelyextending radial arms 8. These arms 8 extend through the slots 7 toengage the circumferentially spaced grooves 2a in the large end of theplug liner 5. The slots 7 and the grooves Qa'are only slightly largerthan the ends of the arms 8 to facili tate the insertion of the ends ofthe arms 8 therein but prevent any circumferential creeping of the plugliner5 around the plug body 1. The arms 8 are bifurcated as at'9 to.

receive the bolts 10 which are threaded into the plug body 1 as at 11and any tendency toward movement by the bifurcated end of the arm 8 isprevented by the lugs 12 on each side thereof. The arms 8 contact withthe plug body 1 as at 13 and with the sleeve as at 14. These arms are soconstructed as regards shape, as to form a fulcrum at 13 or the point ofthe contact with the plug body 1.

1. By referring to the drawings, it will be easily seen that, when thenut 16 on the bolt is tightened, the bifurcated end of the arm 8 will bedrawn in the direction of the small end of the plug body and, the arm 8being fulcrumed as at 13, the opposite end of the arm that contacts withthe sleeve 5 will be forced away from the small end of the plug body,thus tightening the sleeve on the plug body 1. It will be understoodthat, although this positioning and securing means has been described asapplying specifically to a plug liner, such positioning and securingmeans may be used on many difierent linings, particularly those held inoperative relation with their supporting means by a wedging action. Byreferring to Figures 3 and 4 of the drawings, it will be seen that themodification of our invention consists in providing an ar 17 whichsecures the plug 1 and the sleeve 5 in operative relation by a wedgingaction. These arms 17 are slotted as at 18 to receive the bolts 19,threaded onto the plug body as at 22, and give the arms 17 thesufficient longitudinal movement required to move the small ends of thearms out of operative relation with slots in the sleeve 5. Guides 20 areprovided on each side of the arms 17 to prevent circumferential creepingof the sleeve with relation to the plug body 1 and the bolts 21 arethreaded into the opposite ends of the arms 17 for the purpose offorcing the small end of each arm 17 longitudinally into operativerelation with the sleeve 5. The heads of the bolts 21 rest against theouter circumference of the bearing 4 and it will be clearly seen, byreference to Figure 4 of the draw ings, that any turning of the bolts 21will move the small end of the arms 17 either into or out of operativerelation with the sleeve 5. A covering 23 may be provided to interfitwith and be attached to the large end of the plug body 1 to protect thebolts and other working parts of the positioning and securing means fromcontacting with water and other fluids which might, in any way, destroythe efficiency of the positioning and se curing means. It is awell-known fact that some paper will lodge in the large end of therefining plug and. thus, necessitating a thorough cleaning of the plugeach time the color of the paper is changed to prevent mixtures in thecolor of the paper. By covering the large end of the plug with such aplate, this danger is easily el'minated. A

By referring to the previous description and the drawings attachedhereto, it will be easily seen that we have provided a device of suchconstruction that a very simple, yet reliable and inexpensive, means forpositioning and securing the sleeve in operative relation with therefining plug is obtained. It will also be clear that we have providedmeans for preventing the circumferential creeping as well as the endwiseplay of the sleeve.

Having thus described our invention, what we claim is:

1. A. sleeve supporting device comprising a plug, a sleeve mounted onsaid plug, and means for securing said sleeve and said plug together,said means being mounted within the interior of said plug and projectingthrough the walls of said plug and into the walls of said sleeve.

2. A. sleeve supporting device comprising a plug, a sleeve mounted onsaid plug, means for securing said sleeve and said plug together, saidmeans being mounted within the interior of said plug, and means forexcluding liquid from the interior of said plug.

3. The combination with a refining plug, of a covering sleeve for saidplug, said covering sleeve having a slot on one end thereof and an armon said plug adapted to engage said slot in said covering to center andsecure said covering on said plug.

4 Asleeve-supporting device comprising a tapering supporting member, asleeve member carried thereby, said sleeve being adapted to be securedon said sleeve-supporting member by longitudinal movement of the onewith relation to the other, and a fulcrumed arm for effecting suchrelative longitudinal movement.

5. A sleeve-supporting device comprising a tapering supporting member, asleeve member carried thereby, said sleeve member being adapted to besecured on said sleeve supporting member by longitudinal movement of theone with relation to the other, a fulcrumed arm for effecting suchrelative longitudinal movement. and means for maintaining said arm instraight line position, said last-named means comprising lugs positionedto permit lateral movement of said arm.

6. A sleeve supporting device comprising a tapered supporting member,asleeve member carried thereby and means for securing said sleeve uponsaid supporting member by exerting longitudinal pressure upon the sleevemember at spaced points located circumferentially of the body andintermediate the ends thereof.

7. A sleeve supporting device comprising aplug, a sleeve member carriedthereby, said sleeve member being adapted to be secured on said sleevesupporting member by longitudinal movement of the one with relation tothe other and an arm for eifecting such relative movement, said armbeing fulcrumed on.

said plug.

In testimony whereof We hereby afiix our signatures.

LUDWIG H. WESSEL. OSCAR E. LARSON.

